As the title says I am an engineer and happen to be working in the cancer domain specifically TNBC. I am working on a research project where I am trying to understand the signaling pathways activated in TNBC stem cells, due to my limited knowledge in this field I am having difficulties finding answers to some probably very dumb questions which I have listed below. Your answers and feedback are greatly appreciated.

  • Do breast cancer stem cells (BCSC) vary in terms of what signaling pathways are activated or inhibited based on the kind of breast cancer e.g. TNBC, HER2+, Luminal A, or Luminal B ? Essentially when we talk of BCSC do we need to specify what kind of BCSC is it from a TNBC tumor or Her2+ Tumor, etc?
  • Say a patient has HER2+ Breast Cancer, can some breast cancer cells evolve into TNBC after a point? I am trying to find out if a patient can have both HER2+ and TNBC, i.e. some Breast cancer cells exhibit HER2+ molecular signatures while the rest exhibit TNBC signatures.
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